Members of the public could log into the app without any security clearance

8

Prime Minister Theresa May arrives at the Hyatt Regency hotel ahead of the start of the Conservative Party conference in BirminghamCredit: London News Pictures

8

Party leader May will give her keynote address on October 3 - the final day of the eventCredit: �2018 Pete Maclaine / i-Images

8

Armed police patrol keep watch as politicians and delegates begin to arrive for the annual event at the International Convention CentreCredit: Getty Images - Getty

8

Armed cops stand on the roof of the International Convention Centre ahead of the four-day conferenceCredit: Getty Images - Getty

Last night one senior Conservative told The Daily Telegraph: “It is disgraceful that people can access the personal details of MPs ­because of the utter incompetence of CCHQ. This could put people’s safety at risk – [party chairman] Brandon Lewis needs to get a grip.”

Andrew Bridgen, the MP for North West Leicestershire, said: “This is a ­serious lapse. A data breach of this kind has made Cabinet ministers’ details available to hackers and there are wider implications for security.

“There will have to be a wide-­ranging investigation to establish how this happened and the people responsible will have to be held to account.”

Guardian Columnist Dawn Foster, one of the first people to spot the flaw, wrote: "FFS, the Tory conference app allows you to log in as other people and view their contact details just with their email address, no emailed security links, and post comments as them.

"They've essentially made every journalist, politician and attendee's mobile number public. Fantastic."

We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips@the-sun.co.uk or call 0207 782 4368 . You can WhatsApp us on 07810 791 502. We pay for videos too. Click here to upload yours.

Comments are subject to our community guidelines, which can be viewed here.